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2. How to Use the Amsler Grid to Test Your Vision - Healthline

   www.healthline.com/health/using-the-amsler-grid

   Here’s how to use the Amsler grid as part of monitoring your wet AMD: 1. Print out the Amsler grid. The Amsler grid looks best on pure white matte paper. You can get your own copy to print off ...

3. How to Measure Pupillary Distance (PD) - Healthline

   www.healthline.com/health/how-to-measure-pd

   Stand in front of a mirror and hold the ruler horizontal. Keep it stable. Start with the ruler lined up to the center of one pupil and measure the distance to the next pupil. This number is your ...

4. Pupillary Distance: Types and How to Measure - WebMD

   www.webmd.com/eye-health/pupillary-distance

   Cover your right eye with your hand. Your friend will line up the 0 millimeters with the center of your left pupil. Uncover your eye, look straight ahead, and then cover your left eye. Your friend ...

5. Amsler Grid Test for Retinal Conditions, When to See a Doctor

   www.healthline.com/.../eye-health/amsler-grid-test

   Marc Amsler, a professor of ophthalmology in the Eye Clinic at the University of Zurich, developed the grid in the 1950s. Amsler grid. Take the test by looking at the grid and following these ...

6. Snellen chart - Wikipedia

   en.wikipedia.org/wiki/Snellen_chart

   In the most familiar acuity test, a Snellen chart is placed at a standard distance: 6 metres. At this distance, the symbols on the line representing "normal" acuity subtend an angle of five minutes of arc, and the thickness of the lines and of the spaces between the lines subtends one minute of arc. This line, designated 6/6 (or 20/20), is the ...

7. Can You Test Your Vision Online? How Online Vision Tests Work

   www.webmd.com/eye-health/online-vision-tests

   An online vision test can have a few steps. You’ll need a computer and some space to sit back so you can take the part of the test that checks your distance vision. Some tests also need you to ...